Water Pollution

4. A community of living organisms interacting with their physical environment.
7. The entire area of land where all the water drains into a single body of water, like the Porirua Harbour.
8. The variety of plant and animal life in a particular habitat
11. Water from rain or irrigation that flows over the land, carrying pollutants into the harbour.
12. The process of fine dirt and particles settling at the bottom of the water, making it murky and unhealthy for sea life.
13. The process of declining or wearing down in quality or condition

1. The act of polluting or making something impure
2. Large in amount, size, or degree; or significantly effectiveNegligible So small or unimportant as to be not worth considering; or having minimal impact
3. Actions that can be maintained over a long period without depleting natural resourcesInfrastructure The underlying framework of a system, such as roads, bridges, and storm drain networks
5. The specific name for a coastal body of water where fresh river water mixes with salt sea water.
6. The act of returning something to its original or former condition
9. Action taken to improve a situation
10. The act of reducing the severity or seriousness of something